CN111457451A - Simple and efficient electric heater with wind direction switching function - Google Patents

Simple and efficient electric heater with wind direction switching function Download PDF

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Publication number
CN111457451A
CN111457451A CN202010245720.XA CN202010245720A CN111457451A CN 111457451 A CN111457451 A CN 111457451A CN 202010245720 A CN202010245720 A CN 202010245720A CN 111457451 A CN111457451 A CN 111457451A
Authority
CN
China
Prior art keywords
electric heater
fan assembly
ventilation
outer shell
wind direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010245720.XA
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Chinese (zh)
Inventor
杜岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Xinneng Electrical Appliance Manufacturing Co Ltd
Original Assignee
Zhongshan Xinneng Electrical Appliance Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongshan Xinneng Electrical Appliance Manufacturing Co Ltd filed Critical Zhongshan Xinneng Electrical Appliance Manufacturing Co Ltd
Priority to CN202010245720.XA priority Critical patent/CN111457451A/en
Publication of CN111457451A publication Critical patent/CN111457451A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/06—Casings, cover lids or ornamental panels, for radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0057—Guiding means
    • F24H9/0063—Guiding means in air channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0073—Arrangement or mounting of means for forcing the circulation of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

The invention relates to a simple and efficient electric heater with a wind direction switching function, which comprises an outer shell and a fan assembly, wherein the outer shell is provided with a fan inlet; the method is characterized in that: more than two groups of ventilation structures are arranged on the outer shell, and the ventilation structures face different directions respectively; the whole rotatable setting of fan assembly is on the shell body, along with the relative shell body of fan assembly rotation, air intake and the ventilation structure intercommunication that corresponds on the fan assembly, the air outlet on the fan assembly and the ventilation structure intercommunication that corresponds form the air inlet wind channel between air intake and the ventilation structure that corresponds, form the air-out wind channel between air outlet and the ventilation structure that corresponds. The wind direction switching operation of the electric heater is convenient and fast, the switchable wind directions are multiple, the air supply range is large, and the electric heater meets different use requirements.

Description

Simple and efficient electric heater with wind direction switching function
Technical Field
The invention relates to an electric heater, in particular to a simple and efficient electric heater with a wind direction switching function.
Background
① the main body is integrally arranged to be rotatable, the main body rotates in a certain angle range in a reciprocating mode, warm air is blown in the certain angle range, and then the heating range is expanded, however, the main body rotates integrally, so that the main body is easily affected by external factors (when external objects block the main body to rotate normally), ② the air outlet is provided with swinging blades, the swinging blades have an air guiding function, the air blowing or air direction switching is achieved through the swinging blades, the air blowing range of the structure is limited, the blades are easily damaged, ③ the air guide plate is arranged on the air channel, the air guide plate is shifted to achieve air direction switching, the switchable air direction is limited (generally, only two air directions can be switched), the air blowing is not achieved, and the air blowing range is still not solved.
Therefore, further improvements are needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a simple and efficient electric heater with a wind direction switching function.
The purpose of the invention is realized as follows:
a simple and efficient electric heater with a wind direction switching function comprises an outer shell and a fan assembly; the method is characterized in that: more than two groups of ventilation structures are arranged on the outer shell, and the ventilation structures face different directions respectively; the whole rotatable setting of fan assembly is on the shell body, along with the relative shell body of fan assembly rotation, air intake and the ventilation structure intercommunication that corresponds on the fan assembly, the air outlet on the fan assembly and the ventilation structure intercommunication that corresponds form the air inlet wind channel between air intake and the ventilation structure that corresponds, form the air-out wind channel between air outlet and the ventilation structure that corresponds.
In a specific scheme I, the ventilation structure is an upper ventilation hole arranged at the top of the outer shell and/or a front ventilation hole arranged at the front side and/or a lower ventilation hole arranged at the bottom and/or a rear ventilation hole arranged at the rear side.
The specific scheme II is that the ventilation structure is a plurality of circumferential ventilation holes arranged on the peripheral side of the outer shell.
The third concrete scheme, the ventilation structure is the front ventilation hole of seting up in the shell body front side and/or the back ventilation hole of rear side and/or left ventilation hole and/or the right ventilation hole on right side.
And the outer shell is provided with air guide ribs for guiding the air inlet and the air outlet to be respectively communicated with the corresponding ventilation structures.
A heating body is arranged at the air inlet and/or the air outlet; and/or a heating body is arranged on the ventilation structure.
The ventilation structure is provided with a filter screen.
The two ends of the fan assembly are respectively connected with the outer shell in a rotating mode through corresponding rotating shafts, and the fan assembly can rotate relative to the outer shell.
The shell is provided with a shifting block connected with the rotating shaft, and the fan assembly is manually driven to rotate through the shifting block; and/or a switching motor is arranged on the outer shell, the rotating shaft is in transmission connection with a motor shaft of the switching motor, and the switching motor is used for electrically driving the fan assembly to rotate.
The fan assembly comprises a fan shell, a cross-flow wind wheel and a driving motor; the cross section of the fan shell is in a volute shape, the air inlet and/or the air outlet are/is formed in the end part of the fan shell, and the air inlet direction of the air inlet is basically vertical to the air outlet direction of the air outlet; the cross-flow wind wheel is positioned and rotated on the fan shell; the driving motor is fixedly arranged on the fan shell; and the central shaft of the cross-flow wind wheel is in transmission connection with a motor shaft of a driving motor.
The invention has the following beneficial effects:
in the electric heater, the fan assembly is integrally and rotatably arranged on the outer shell, and the wind direction can be effectively switched and the air supply range can be expanded by rotating the fan assembly; specifically, the switching of the wind direction can enable the electric heater to be switched into different using states, so that the electric heater is endowed with multiple purposes and/or multiple functions; the fan assembly can realize wide-angle air supply by continuously rotating (reciprocating rotation or clockwise rotation), the air supply range is greatly increased compared with the traditional structure, the air supply range can be even expanded to 360 degrees by matching with the ventilation structure arranged on the upper peripheral side of the outer shell by 360 degrees, and 360-degree dead-angle-free air supply is realized. To sum up, in this electric heater, the rotation convenient operation of fan assembly is swift, can switch the wind direction at will and enlarge the air supply scope through rotating the fan assembly, and the dependable performance, the adaptable different use places of electric heater, the practicality is strong.
Drawings
Fig. 1 is a perspective view of an electric heater in a first embodiment of the present invention.
Fig. 2 is a cross-sectional view illustrating a first usage state of the electric heater according to the first embodiment of the present invention.
Fig. 3 is a sectional view of a second usage state of the electric heater in the first embodiment of the present invention.
Fig. 4 is a sectional view showing a third usage state of the electric heater according to the first embodiment of the present invention.
Fig. 5 is a sectional view illustrating a fourth usage state of the electric heater according to the first embodiment of the present invention.
Fig. 6 is a schematic top view of an electric heater according to a second embodiment of the present invention.
Fig. 7 is a schematic top view of an electric heater according to a third embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
First embodiment
Referring to fig. 1-5, the simple and efficient electric heater with a wind direction switching function comprises an outer shell 1 and a fan assembly 2; more than two groups of ventilation structures are arranged at different positions on the surface of the outer shell 1, and the ventilation structures face different directions respectively; the whole rotatable setting of fan assembly 2 is in shell body 1 inboard, and along with the relative shell body 1's of fan assembly 2 rotation, air intake 203 on the fan assembly 2 and the ventilation structure intercommunication that corresponds, air outlet 204 on the fan assembly 2 and the ventilation structure intercommunication that corresponds form air inlet duct 3 between air intake 203 and the ventilation structure that corresponds, form air outlet duct 4 between air outlet 204 and the ventilation structure that corresponds.
Further, the outer casing 1 related to this embodiment is a square body, and the ventilation structure is an upper ventilation hole 101 opened on the top of the outer casing 1, a front ventilation hole 102 on the front side, a lower ventilation hole 103 on the bottom, and a rear ventilation hole 104 on the rear side. Referring to fig. 2, when the electric heater is in a first use state, the fan assembly 2 rotates to a first position, at this time, the air inlet 203 corresponds to and is communicated with the rear vent 104, the air outlet 204 corresponds to and is communicated with the upper vent 101, and warm air is blown out from the top of the outer shell 1; referring to fig. 3, when the electric heater is in a second use state, the fan assembly 2 rotates to a second position, at this time, the air inlet 203 corresponds to and is communicated with the upper vent hole 101, the air outlet 204 corresponds to and is communicated with the front vent hole 102, and warm air is blown out from the front side of the outer shell 1; referring to fig. 4, when the electric heater is in a third use state, the fan assembly 2 rotates to a third position, at this time, the air inlet 203 corresponds to and is communicated with the front vent 102, the air outlet 204 corresponds to and is communicated with the lower vent 103, and warm air is blown out from the bottom of the outer shell 1; referring to fig. 5, the electric heater is in a fourth use state, the fan assembly 2 rotates to a fourth position, the air inlet 203 corresponds to and communicates with the lower vent 103 at the moment, the air outlet 204 corresponds to and communicates with the rear vent 104, and warm air is blown out from the rear side of the outer shell 1.
Furthermore, the inner cavity of the outer shell 1 is provided with air guiding ribs 105 for guiding the air inlet 203 and the air outlet 204 to be respectively communicated with corresponding ventilation structures, and an air duct is formed between the two air guiding ribs 105.
Furthermore, a heating element 5 is arranged at the air inlet 203 and/or the air outlet 204; and/or a heating body 5 is arranged on the ventilation structure; the heating element 5 is an electrified heating element such as PTC, a heating tube, a heating wire, graphene and the like.
Further, for placing external dust, impurity etc. and inhaling in the shell body 1, influence the fan assembly and normally work, the ventilation structure is provided with the filter screen, still can adopt the filter screen that has the air purification function according to actual need.
Furthermore, two ends of the fan assembly 2 are respectively rotatably connected to the outer casing 1 through corresponding rotating shafts (not shown in the figures), so that the fan assembly 2 can rotate relative to the outer casing 1.
Further, the surface of the outer shell 1 is provided with a toggle block 6 connected with the rotating shaft, and a user can manually drive the fan assembly 2 to rotate through the toggle block 6. In addition, according to actual need, fan assembly 2's rotation still can be through the electric mode drive, then be provided with the switching motor in shell body 1 promptly, the motor shaft of switching motor is connected in the pivot transmission, through switching motor electric drive fan assembly 2 rotation, the benefit of electric drive mode lies in that the cooperation corresponding communication technology can realize remote control, timing control etc..
Further, the fan assembly 2 comprises a fan shell 201, a cross-flow wind wheel 202 and a driving motor; the cross section of the fan shell 201 is volute, the air inlet 203 and the air outlet 204 are respectively arranged at the end part of the fan shell 201, and the air inlet direction of the air inlet 203 is basically vertical to the air outlet direction of the air outlet 204; the cross flow wind wheel 202 is positioned and rotated on the inner side of the fan shell 201; the driving motor is fixedly arranged on the fan shell 201; the central shaft of the cross flow wind wheel 202 is in transmission connection with the motor shaft of the driving motor.
Second embodiment
Referring to fig. 6, the electric heater according to the present embodiment is different from the first embodiment in that: the ventilation structure is a plurality of circumferential ventilation holes 106 which are arranged on the periphery of 1360 degrees of the outer shell; the outer shell 1 is preferably cylindrical, and the air outlet of the electric heater can be realized at 360 degrees without dead angles by utilizing the principle of rotating the fan assembly 2.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
Third embodiment
Referring to fig. 7, the present embodiment relates to an electric heater different from the first embodiment in that: the ventilation structure is a front ventilation hole 102 arranged at the front side of the outer shell 1, a rear ventilation hole 104 arranged at the rear side, a left ventilation hole 107 at the left side and a right ventilation hole 108 at the right side; therefore, the electric heater of this embodiment has the effect of preceding, back, left and right air-out.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A simple and efficient electric heater with a wind direction switching function comprises an outer shell (1) and a fan assembly (2); the method is characterized in that: more than two groups of ventilation structures are arranged on the outer shell (1), and the ventilation structures face different directions respectively; the whole rotatable setting in shell body (1) of fan assembly (2), along with the rotation of the relative shell body (1) of fan assembly (2), air intake (203) and the ventilation structure intercommunication that corresponds on fan assembly (2), air outlet (204) and the ventilation structure intercommunication that corresponds on fan assembly (2), form air inlet duct (3) between air intake (203) and the ventilation structure that corresponds, form air outlet duct (4) between air outlet (204) and the ventilation structure that corresponds.
2. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the ventilation structure is an upper ventilation hole (101) arranged at the top of the outer shell (1) and/or a front ventilation hole (102) arranged at the front side and/or a lower ventilation hole (103) arranged at the bottom and/or a rear ventilation hole (104) arranged at the rear side.
3. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the ventilation structure is a plurality of circumferential ventilation holes (106) arranged on the circumferential side of the outer shell (1).
4. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the ventilation structure is a front ventilation hole (102) arranged on the front side of the outer shell (1) and/or a rear ventilation hole (104) arranged on the rear side and/or a left ventilation hole (107) arranged on the left side and/or a right ventilation hole (108) arranged on the right side.
5. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: and the outer shell (1) is provided with air guiding ribs (105) for guiding the air inlet (203) and the air outlet (204) to be communicated with the corresponding ventilation structures respectively.
6. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: a heating body (5) is arranged at the air inlet (203) and/or the air outlet (204); and/or a heating body (5) is arranged on the ventilation structure.
7. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the ventilation structure is provided with a filter screen.
8. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the two ends of the fan assembly (2) are respectively connected with the outer shell (1) in a rotating mode through corresponding rotating shafts, and the fan assembly (2) can rotate relative to the outer shell (1).
9. The simple and efficient electric heater with the wind direction switching function according to claim 8, characterized in that: the outer shell (1) is provided with a shifting block (6) connected with the rotating shaft, and the fan assembly (2) is manually driven to rotate through the shifting block (6); and/or a switching motor is arranged on the outer shell (1), a motor shaft of the switching motor is connected with the rotating shaft in a transmission manner, and the switching motor is used for electrically driving the fan assembly (2) to rotate.
10. The simple and efficient electric heater with the wind direction switching function according to claim 1, characterized in that: the fan assembly (2) comprises a fan shell (201), a cross-flow wind wheel (202) and a driving motor; the cross section of the fan shell (201) is volute-shaped, the air inlet (203) and/or the air outlet (204) are/is formed in the end part of the fan shell (201), and the air inlet direction of the air inlet (203) is basically vertical to the air outlet direction of the air outlet (204); the cross-flow wind wheel (202) is positioned and rotated on the fan shell (201); the driving motor is fixedly arranged on the fan shell (201); the central shaft of the cross flow wind wheel (202) is in transmission connection with a motor shaft of a driving motor.
CN202010245720.XA 2020-03-31 2020-03-31 Simple and efficient electric heater with wind direction switching function Pending CN111457451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010245720.XA CN111457451A (en) 2020-03-31 2020-03-31 Simple and efficient electric heater with wind direction switching function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010245720.XA CN111457451A (en) 2020-03-31 2020-03-31 Simple and efficient electric heater with wind direction switching function

Publications (1)

Publication Number Publication Date
CN111457451A true CN111457451A (en) 2020-07-28

Family

ID=71679456

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010245720.XA Pending CN111457451A (en) 2020-03-31 2020-03-31 Simple and efficient electric heater with wind direction switching function

Country Status (1)

Country Link
CN (1) CN111457451A (en)

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